Siemens SIPART DR21

2 Technical Description
2.6 Technical Data
Manual
SIPART DR21
C73000-B7476-C143-08
45
6DR2804-8A/B Coupling relay 230 V
1 relay module 6DR2804-8B
2 relay modules 6DR2804-8A
per relay module 2 relays with 1 switching contact each with
spark quenching element
- Contact material Silver-cadmium oxide
Switching voltage
AC ≤ 250 V
DC ≤ 250 V
Switching current
AC ≤ 8A
DC ≤ 8A
Rating
AC ≤ 1250 VA
DC ≤30 W at 250 V
≤100 W at 24 V
- Service life
mechanical 2×10
7
switching cycles
electrical AC 220 V, ohmic 2×10
6
/I(A) switching cycles
- Spark quenching element Series circuit 22 nF/220 Ω parallel
plus varistor 420 V
rms
- Exciter winding
Voltage +19 to +30 V
resistance 1.2 kΩ 180 Ω
- Electrical isolation between
Exciter winding -- contacts
Relay module – relay module
(6DR2805-8A)
Safe isolation
1)
by reinforced isolation, air-
and creep lines for overvoltage class III
1)
and degree of contamination 2
1)
contact -- contact
of a relay module
Safe isolation
1)
by reinforced insulation,
air- and creep lines for overvoltage class II
1)
and degree of contamination 2
1)
1)
according to DIN EN 61010 Part 1
- T ype of protection
Housing IP50 according to DIN 40050
Connections (in plugged state) IP20 according to DIN 40050